Parametric and local optimization studies on two- step high temperature acid hydrolosis of corn (Zea mays L.) stover for xylose production.

Date

10-2012

Degree

Bachelor of Science in Agricultural and Biosystems Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Bataller, Butch G.

Abstract

The study is about using Two-stage acid hydrolysis for the production of xylose using agricultural residues such as corn stover as feedstock. For the first stage hydrolysis, cornstover was pretreated using optimum conditions made by Fojas (2008) for corn stover which is 5%w/v substrate loading, 0.4%v/v H₂So₄ and autoclaved for 15 mins at 10psia or 115ºC. There were three parameters varied for the second stage acid hydrolysis: acid concentration, temperature and reaction time. The design of experiment used was2ᵏ factorial and the parameters were varied into high and low settings. Analysis of variance was done on the results with percent xylose yield as response variable. Reaction time to be a significant variable and it was observed that the yields is highest at 2%v/v H₂SO₄, 126.67ºC and 15 minutes reaction time where the yield is 0.7431% xylose. The equation generated for the xylose yield was %Xylose Yield(-w/)w)=0.41-0.26 * C.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology

Call Number

Thesis

Document Type

Thesis

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